{"data":{"schemaVersion":"realm.mine-profile.v1","generatedAt":"2026-10-13T11:26:59.401Z","identity":{"mine_id":"1700951","name":"Bluestone Quarry","status":"Abandoned","status_date":"2024-04-22","mine_type":"Surface","coal_metal":"M","commodity":"Construction Sand and Gravel","state":"ME","county":"Cumberland","nearest_town":"South Portland","operator_id":"0136013","operator_name":"LP Murray & Sons, Inc.","controller_id":"0115761","controller_name":"Leland Peabbles  Murray III","district":"M2","office":"Portsmouth NH Field Office","employees":0,"latitude":43.617778,"longitude":-70.259167},"coverage":{"contributingSources":6,"registeredSources":20,"sourceRows":82},"relationships":{"schemaVersion":"realm.temporal-relationships.v1","temporalSemantics":{"validTime":{"granularity":"date","bounds":"inclusive","nullStart":"start date not published in the upstream history row","nullEnd":"open-ended in the upstream history row; not independent proof of present control"},"transactionTime":{"observedAt":"2026-10-13T11:19:05.459773+00:00","meaning":"time the checksum-addressed MDRS artifacts were observed by the PostgreSQL ingestion"},"derivation":{"controllerControlsOperator":"intersection of controller and operator valid-time intervals evidenced through this mine","currentIdentity":"current controller and operator are asserted only by the MDRS Mines snapshot"}},"current":{"mine":{"type":"mine","id":"1700951","name":"Bluestone Quarry"},"operator":{"type":"operator","id":"0136013","name":"LP Murray & Sons, Inc."},"controller":{"type":"controller","id":"0115761","name":"Leland Peabbles  Murray III"},"source":{"datasetId":"msha-mines","observedAt":"2026-10-13T11:19:05.459773+00:00"}},"edges":[{"type":"operator_operates_mine","subject":{"type":"operator","id":"0136013","name":"LP Murray & Sons, Inc."},"object":{"type":"mine","id":"1700951","name":"Bluestone Quarry"},"validFrom":"2014-11-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1700951|0136013|2014-11-19|"}},{"type":"controller_controls_mine","subject":{"type":"controller","id":"0115761","name":"Leland Peabbles  Murray III"},"object":{"type":"mine","id":"1700951","name":"Bluestone Quarry"},"validFrom":"2014-11-19","validTo":null,"current":true,"derived":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1700951|0115761|2014-11-19|"}},{"type":"controller_controls_operator","subject":{"type":"controller","id":"0115761","name":"Leland Peabbles  Murray III"},"object":{"type":"operator","id":"0136013","name":"LP Murray & Sons, Inc."},"validFrom":"2014-11-19","validTo":null,"current":true,"derived":true,"evidenceMineId":"1700951","intervalAnomaly":false,"source":{"datasetId":"msha-controller-operator-history","observedAt":"2026-10-13T11:19:05.459773+00:00","recordKey":"1700951|0136013|2014-11-19|0115761|2014-11-19|21821"}}],"coverage":{"historyRecords":1,"edgeCount":3,"intervalAnomalies":0,"sourceDatasetId":"msha-controller-operator-history"}},"sources":[{"id":"msha-addresses","name":"Addresses of Record","domains":["identity","logistics"],"products":["entity resolution","address history","facility geocoding"],"rowCount":1,"firstDate":"2024-04-22","lastDate":"2024-04-22","metrics":{},"periods":{},"recentRecords":[]},{"id":"msha-controller-operator-history","name":"Controller and Operator History","domains":["identity","compliance"],"products":["historical ownership attribution","operator transitions","valid-time joins"],"rowCount":1,"firstDate":"2014-11-19","lastDate":"2014-11-19","metrics":{"recentRows":0,"currentOperatorTenures":1,"completedOperatorTenures":0},"periods":{},"recentRecords":[]},{"id":"msha-inspections","name":"Inspections","domains":["safety","compliance"],"products":["inspection mix","on-site hours","event context","citation rate denominator"],"rowCount":2,"firstDate":"2015-06-03","lastDate":"2016-08-31","metrics":{"inspectors":2,"recentRows":0,"onSiteHours":8.25,"inspectionHours":17,"inspectionSamples":0},"periods":{},"recentRecords":[{"SOURCE_ROW_NUMBER":"540049","EVENT_NO":"6752479","INSPECTION_BEGIN_DT":"08/31/2016","INSPECTION_END_DT":"09/06/2016","ACTIVITY_CODE":"E28","ACTIVITY":"Mine Idle Activity","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"7.5","SUM_TOTAL_ON_SITE_HOURS":"1.5","sourceDate":"2016-08-31"},{"SOURCE_ROW_NUMBER":"872294","EVENT_NO":"6687204","INSPECTION_BEGIN_DT":"06/03/2015","INSPECTION_END_DT":"06/03/2015","ACTIVITY_CODE":"E01","ACTIVITY":"Regular Safety and Health Inspection","NBR_INSPECTOR":"1","SUM_TOTAL_INSP_HOURS":"9.5","SUM_TOTAL_ON_SITE_HOURS":"6.75","sourceDate":"2015-06-03"}]},{"id":"msha-mine-production-quarterly","name":"Mine Employment and Production — Quarterly","domains":["production","safety","compliance"],"products":["production trend","employee hours","rate denominators","seasonality"],"rowCount":63,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2024-Q2":{"hours":1,"employees":1,"production":0},"2024-Q1":{"hours":1,"employees":1,"production":0},"2023-Q4":{"hours":1,"employees":1,"production":0},"2023-Q3":{"hours":1,"employees":1,"production":0},"2023-Q2":{"hours":1,"employees":1,"production":0},"2023-Q1":{"hours":1,"employees":1,"production":0},"2022-Q4":{"hours":1,"employees":1,"production":0},"2022-Q3":{"hours":1,"employees":1,"production":0},"2022-Q2":{"hours":1,"employees":1,"production":0},"2022-Q1":{"hours":1,"employees":1,"production":0},"2021-Q4":{"hours":1,"employees":1,"production":0},"2021-Q3":{"hours":1,"employees":1,"production":0}},"recentRecords":[]},{"id":"msha-mine-production-yearly","name":"Mine Employment and Production — Yearly","domains":["production","safety","compliance"],"products":["annual trend","backfill","quarterly reconciliation"],"rowCount":14,"firstDate":null,"lastDate":null,"metrics":{},"periods":{"2015":{"hours":4,"employees":1,"production":0},"2016":{"hours":49,"employees":2,"production":0},"2017":{"hours":3,"employees":1,"production":0},"2018":{"hours":70,"employees":3,"production":0},"2019":{"hours":4,"employees":1,"production":0},"2020":{"hours":4,"employees":1,"production":0},"2021":{"hours":4,"employees":1,"production":0},"2022":{"hours":4,"employees":1,"production":0},"2023":{"hours":4,"employees":1,"production":0},"2024":{"hours":2,"employees":1,"production":0}},"recentRecords":[]},{"id":"msha-mines","name":"Mines","domains":["identity","production","logistics"],"products":["mine identity","status","commodity","location","operator and controller"],"rowCount":1,"firstDate":null,"lastDate":null,"metrics":{},"periods":{},"recentRecords":[]}],"safety":{"href":"/api/v1/mines/1700951/safety","description":"Full-period safety series, top CFR sections and paginated activity. Requires PostgreSQL."},"silica":{"href":"/api/v1/mines/1700951/silica","description":"Dedicated silica records, measurements, sample status and trends. Defaults to the snapshot year; use year=all for history."},"externalContext":{"eia":null,"title30":{"snapshot":{"chapterCount":6,"featuredSectionCount":100,"latestAmendedOn":"2026-08-14","latestIssueDate":"2026-08-14","partCount":206,"sectionCount":5954,"upToDateAsOf":"2026-08-19"},"regulations":[],"fullCorpus":"/data/title30-sections.json"}}},"meta":{"representation":"json","mineId":"1700951","dataSource":"postgres","snapshotId":"2026-10-13T11:19:05.459773+00:00","completedAt":"2026-10-13T11:26:59.401Z","sourceCount":20,"totalRows":17906804}}